Bump tolk from 3.2.1 to 4.0.0

Bumps [tolk](https://github.com/tolk/tolk) from 3.2.1 to 4.0.0.
- [Release notes](https://github.com/tolk/tolk/releases)
- [Changelog](https://github.com/tolk/tolk/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tolk/tolk/compare/v3.2.1...v4.0.0)

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile

@@ -53,7 +53,7 @@ group :development do
   gem "spring"
   gem "yard"
 
-  gem 'tolk', '~> 3.2.1'
+  gem 'tolk', '~> 4.0.0'
 
   gem "bullet"
   gem "rack-mini-profiler"

Gemfile.lock

@@ -106,7 +106,7 @@ GEM
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     htmlentities (4.3.4)
-    i18n (1.8.3)
+    i18n (1.8.4)
       concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.4)
     jquery-rails (4.4.0)
@@ -191,7 +191,7 @@ GEM
       thor (>= 0.19.0, < 2.0)
     rainbow (3.0.0)
     rake (13.0.1)
-    rb-fsevent (0.10.3)
+    rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     ref (2.0.0)
@@ -273,17 +273,17 @@ GEM
     thor (1.0.1)
     thread_safe (0.3.6)
     tilt (2.0.10)
-    tolk (3.2.1)
+    tolk (4.0.0)
       rails (>= 5.0)
       safe_yaml (>= 0.8.6)
-      sass
+      sassc
     tzinfo (1.2.7)
       thread_safe (~> 0.1)
     uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
     unicode-display_width (1.7.0)
     uniform_notifier (1.13.0)
-    websocket-driver (0.7.2)
+    websocket-driver (0.7.3)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
     will_paginate (3.3.0)
@@ -332,7 +332,7 @@ DEPENDENCIES
   spring
   sqlite3
   therubyracer
-  tolk (~> 3.2.1)
+  tolk (~> 4.0.0)
   uglifier (>= 1.3.0)
   will_paginate
   yard